380DTH Drilling rig

DTH (Down-The-Hole) drilling is a percussive rotary drilling method where the hammer mechanism is located directly at the bottom of the drill string, just above the drill bit, inside the borehole.

Advantages of High Efficiency 380 DTH Drilling Rig

Structural Features of down-the-hole drilling rig

Rotary reducer

1. The internal structure is reasonable and easy to maintain. The rotary head is replaced with an enhanced shock absorber, which can reduce the impact reaction force of the drilling. The gear-type rotary motor has fast speed, large starting torque, rapid start and stop, and reliable. It has overload protection and low temperature rise for long-term work.

2. Strong chassis

The high-strength running mechanism provides strength and durability for the whole machine. The surfaces of the drive wheels, guide wheels, track rollers, and track pads are all specially wear-resistant. The drive is strong and the adaptability is good, enabling the equipment to be used in complex terrain Maintain a stable walking posture. Use one-time oil lubrication to avoid the tedious of frequent maintenance and maintenance during use.

3. Central control hydraulic system

The ergonomically designed integrated control console integrates hydraulic actuators, drilling systems, etc. in one place to optimize operability and operating efficiency. The body is equipped with a foldable detachable operation pedal to meet the requirements of single-person operation.

4. Robotic arm

The new structure of the mechanical arm mechanism expands the drilling direction and working range through five coupling mechanisms and hydraulic oil cylinders. Extended carriage, manganese steel slide rail and multi-group roller design skateboard can withstand large torque, resist deformation, and extend the service life of the carriage.

Performance features of DTH Drilling rig

High Penetration Rates: Highly efficient in hard and abrasive rock formations due to the direct impact of the hammer on the bit.

Excellent Hole Straightness and Accuracy: The hammer's position directly behind the bit minimizes hole deviation, crucial for precision drilling.

Versatility: Capable of drilling in a wide range of rock types, from soft to very hard.

Deep Drilling Capability: Excels in deep hole applications, providing reliable drilling at significant depths.

Less Vibration: Compared to top hammer drilling, DTH generates less vibration, reducing wear and tear on the drill string and equipment.

Reduced Noise: Generally quieter operation, which can be an advantage in urban or noise-sensitive areas.

Efficient Cuttings Removal: High-pressure air effectively flushes cuttings, keeping the hole clean.

Cost-Effective for Deep/Hard Rock: While initial setup can be higher, the efficiency in challenging conditions often leads to lower overall drilling costs for specific projects.

Common Applicaion

Water Well Drilling (Deep Wells)

Mining (Blast Hole Drilling)

Geotechnical Drilling and Foundation Construction

Geothermal Drilling

Exploration Drilling (Mineral and Geological)

Oil and Gas (Shallow Fields)

Why choose 380-meter DTH rigs?

Hard Rock Penetration: DTH technology is highly efficient in hard, abrasive, and fractured rock formations, which are common in these industries.

Depth Capability: The ability to consistently drill to depths of 380 meters or more with good accuracy.

Hole Quality: DTH drilling generally produces straighter and cleaner holes compared to some other drilling methods.

Larger Hole Diameters: DHD380 hammers are designed for larger diameter holes, which are required for many blast hole, large-diameter well, and piling applications.

Reduced Vibration: Compared to top hammer drills, DTH hammers create less surface vibration, making them suitable for projects near existing structures (e.g., urban construction, infrastructure development).